/**
 * This file is part of 1genia trampoline
 * Copyright (C) 2007 1genia (contact@1genia.com)
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; version 3 of the License. 
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details. 
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; see the file COPYING.TXT.  If not,
 * write to the Free Software Foundation, Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA 02110-1301, USA. 
 **/
package com.genia.toolbox.projects.toolbox_basics_project.spring.manager;

import com.genia.toolbox.basics.exception.technical.TechnicalException;
import com.genia.toolbox.persistence.exception.PersistenceException;
import com.genia.toolbox.projects.toolbox_basics_project.bean.model.User;

/**
 * manager to handle {@link User}.
 */
public interface UserManager
{
  /**
   * authenticate a user.
   * 
   * @param user
   *          the user to authentificate
   * @param password
   *          the password user.
   * @return <code>true</code> if the password corresponds with the userName,
   *         <code>false</code> otherwise.
   * @throws TechnicalException
   *           if an error occured
   */
  public boolean authenticate(User user, String password)
      throws TechnicalException;



  /**
   * authenticate a user.
   * 
   * @param login
   *          the login of the user to authentificate
   * @param password
   *          the password user.
   * @return <code>true</code> if the password corresponds with the userName,
   *         <code>false</code> otherwise.
   * @throws TechnicalException
   *           if an error occured
   */
  public boolean authenticate(String login, String password)
      throws TechnicalException;



  /**
   * get User object from its login.
   * 
   * @param login
   *          the login of the user
   * @return the User object
   * @throws PersistenceException
   *           if an error occured
   */
  public User getUser(String login)
      throws PersistenceException;



  /**
   * returns a {@link User} knowing its identifier.
   * 
   * @param identifier
   *          the identifier of the {@link User}
   * @return the {@link User} associated to the given identifier or
   *         <code>null</code> if no such user exists.
   */
  public User get(Long identifier);

}
